Math
-2-(-7) = ?
Bookmark

Q.12 The polynomials are 2 and 3

What is polynomial ?

A polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and positive-integer powers of variables. An example of a polynomial of a single indeterminate x is x² − 4x + 7.

Given, p(x) = -x² + x + 2

p has a degree 2

Let, a = 1 + i√2

      b = 1 - i√2

a + b = 1 + i√2 + 1 - i√2

        = 2

a * b = (1 + i√2) * (1 - i√2 )

        = 1 - (i√2)²

        = 1 - i²*2    (where, i² = -1)

        = 1 + 2

        = 3

Therefore, the polynomial are 2 and 3

Q.13 The polynomial is x³ + x

Given, Q(x) = x³ - 2x² - 1

Q has a degree of 3

=>(x - 0) (x - i) (x + i)

=>(x² - ix) (x + i)

=>x³ + x²i - ix² - i²x    (where i² = -1)

=>x³ + x

Therefore, the polynomial is x³ + x

To read more about Polynomial.

https://brainly.com/question/25870256

#SPJ13

Answer:

true

Step-by-step explanation:

it is true ........

Explanation:

A right triangle has exactly one angle that is 90 degrees. This is called a right angle.

The other two angles are acute, which means they are less than 90 degrees. An example would be 30 degrees and 60 degrees.

If 30 degrees is an interior acute angle, then 180-30 = 150 degrees is the exterior obtuse angle. Similarly, the adjacent angle to the 60 is 180-60 = 120 degrees.

This example shows we have two obtuse exterior angles. This applies to any right triangle, and not just this particular one.

1) Let's verify whether that's true or not, plugging in that point into the equa

(-4,2)

Since this is an identity, in other words, the left side is equal to the right side then we can say that's true.

So that's true y=-5/2x-8 is the equation of the line that has in one of its points the y-coordinate y=-8

The history of integers begins with the natural numbers (1,2,3,...), which are also called the counting numbers. They arise naturally by the need of counting things. But there is a problem. "There is a missing number". If you have a number n of things and you subtract all of them, what remains? Intuitively, it must be a number, a number representing nothing (to have nothing). This is the origin of zero.

Now, as time passes, the man began to do trades and arose the money. This leads to a problem. Other numbers are missing now. How do you express how much money you owe someone? counting numbers are not useful here, for they mean "the money you have". Th

The total yards gained or lost is the algebraic sum so the resultant yards is -15 yards thus they lose 15 yards.

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Subtraction = Minus of any two or more numbers.

Summation = addition of two or more numbers or variable

Let's consider all gained yards by positive (+) and all lost yards by negative (-).

Given that,

In the first play = +8 yards (gain)

In second play = -12 yards (lost)

In the third play = 11 yards (Lost)

So total yards = +8 - 12 - 11 = -15 (Lost)

Therefore, the football team lost 15 yards.

Hence "The total yards gained or lost is the algebraic sum so the resultant yards is -15 yards thus they lose 15 yards".

To learn more about the arithmetic operators,

brainly.com/question/25834626

#SPJ1

Answer:

[tex]5\%\text{ or }0.05[/tex]

Step-by-step explanation:

Simple interest rate means if I have "P" amount that I initially deposited, then every year this amount increases by "x% of P" or the original amount I deposited. So it's increasing by the same amount each year, unlike compound interest.

The formula for calculating the amount of interest is: [tex]I=P*r*t[/tex]

Where, r is the interest rate, t is the time unit, and P is the initial amount.

In most cases the t will be expressed in years, and one thing to note is the r is the interest rate in decimal form, so [tex]30\%=0.30[/tex], we want to convert it to decimal form by dividing by 100

We know the amount of interest, as it's given to us as 9,000, and the principle amount or initial amount, given to us as 60,000, and also the time which is given to us as 3 years.

So we know that:

[tex]I=9,000\\P=60,000\\t=3\\[/tex]

Plugging all these values into the equation we get:

[tex]9,000=60,000*3*r\\\\9,000=180,000*r\\\\\frac{9,000}{180,000}=r\\\\0.05=r[/tex]

as noted above, this interest rate, "r" is expressed in decimal form. Since we have to divide by 100 to convert from percentage to decimal, we have to multiply by 100 to convert from decimal to percentage.

this gives us: [tex]r=5\%[/tex]

12×(1/4+1/3)to the power of2+2/3 using PEDMASand INDICIES rule gives 7^8/3

 lndicies is expressed as Ax^n. Where A is the coefficient, x is the base and n is the power or index.

12×(1/4+1/3)to the power of2+2/3

Evaluating the expression

 = (12×( 1/4+1/3))^2+2/3

using PEDMAS

= (12× 7/12)^8/3

opening the bracket, we therefore have

= 7^8/3

learn more about INDICIES from

https://brainly.com/question/170984

#SPJ1

The formula to calculate the volume of a sphere is given to be:

where r is the radius.

From the question, we have the following parameters:

Therefore, the volume is calculated to be:

The volume is 463.0 cm³.

Answer:

  0, 0, 0

Step-by-step explanation:

You want the sum of a number and its opposite for the numbers ...

  3, 7.5, and -2 2/3

The definition of the additive inverse (opposite) of a number is that it is the number that produces 0 when summed with the original number.

Any number summed with its opposite will give zero.

The sums are ...

We have to simplify the expression:

We could see it graphically:

We see that for any angle theta, the cosine of theta + pi/2 is equal to negative sin of theta.

Then we can write:

The answer is -sin(theta).

The diagonal WY bisects the diagonal XV at point D, which means that XV is divided into two equal line segments XD and XV.

Replace the equation above with the given expressions for both line segments:

XD= 2x-6

XV= 3x-6

Using function concepts, it is found that:

a) The meaning of each expression is given as follows:

b) The expression is: A(4) = 1.3.

c) The expression is: A(2) = A(2.5).

In the context of this problem, the format of the function is:

A(t).

In which the meaning of each variable is given as follows:

Which gives the meaning of each expression in item a.

For item b, the expression is given as follows:

A(4) = 1.3.

As 4 hours after the episode premiered, the audience was of 1.3 million people.

For item c, the expression is given as follows:

A(2) = A(2.5).

As the audience after 2 hours = 120 minutes is the same as the audience half an hour = 30 minutes later.

More can be learned about functions at https://brainly.com/question/24808124

#SPJ1

the maximum height is 254 feet.

Answer:

a)  0.5 seconds and 3.5 seconds.

b)  5.98 seconds (2 d.p.)

c)  No.

d)  254 feet at 2 seconds.

Step-by-step explanation:

Given equation:

[tex]h=-16t^2+64t+190, \quad t \geq 0[/tex]

where:

To calculate when the object will be 218 feet above the ground, substitute h = 218 into the equation and solve for t:

[tex]\begin{aligned}\implies -16t^2+64t+190 & = 218\\-16t^2+64t+190-218& = 0\\-16t^2+64t-28 & = 0\\-4(4t^2-16t+7) & = 0\\4t^2-16t+7 & = 0\\4t^2-14t-2t+7 &=0\\2t(2t-7)-1(2t-7)&=0\\(2t-1)(2t-7)&=0\\\implies 2t-1&=0\implies t=\dfrac{1}{2}\\\implies 2t-7&=0 \implies t=\dfrac{7}{2}\end{aligned}[/tex]

Therefore, the object will be 218 feet about the ground at 0.5 seconds and 3.5 seconds.

The object strikes the ground when h is zero. Therefore, substitute h = 0 into the equation and solve for t:

[tex]\begin{aligned}\implies -16t^2+64t+190 & = 0\\-2(8t^2-32t-95) & = 0\\8t^2-32t-95 & = 0\end{aligned}[/tex]

Use the quadratic formula to solve for t:

[tex]\implies t=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}[/tex]

[tex]\implies t=\dfrac{-(-32) \pm \sqrt{(-32)^2-4(8)(-95)} }{2(8)}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{1024+3040} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{4064} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{16 \cdot 254} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{16} \sqrt{254} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm 4 \sqrt{254} }{16}[/tex]

[tex]\implies t=\dfrac{8\pm \sqrt{254} }{4}[/tex]

As t ≥ 0,

[tex]\implies t=\dfrac{8+ \sqrt{254} }{4}\quad \sf only.[/tex]

[tex]\implies t=5.98 \sf \; s \; (2 d.p.)[/tex]

Therefore, the object strikes the ground at 5.98 seconds (2 d.p.).

To find if the object will reach a height of 300 feet above the ground, substitute h = 300 into the equation and solve for t:

[tex]\begin{aligned}\implies -16t^2+64t+190 & = 300\\-16t^2+64t+190-300 & =0\\-16t^2+64t-110 & =0\\-2(8t^2-32t+55) & =0\\8t^2-32t+55& =0\end{aligned}[/tex]

Use the quadratic formula to solve for t:

[tex]\implies t=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}[/tex]

[tex]\implies t=\dfrac{-(-32) \pm \sqrt{(-32)^2-4(8)(55)} }{2(8)}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{1024-1760} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{-736} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{16 \cdot -1 \cdot 46} }{16}[/tex]

[tex]\implies t=\dfrac{32 \pm \sqrt{16} \sqrt{-1} \sqrt{ 46}}{16}[/tex]

[tex]\implies t=\dfrac{32 \pm 4i\sqrt{ 46} }{16}[/tex]

[tex]\implies t=\dfrac{8\pm \sqrt{ 46} \;i}{4}[/tex]

Therefore, as t is a complex number, the object will not reach a height of 300 feet.

The maximum height the object can reach is the y-coordinate of the vertex.  

Find the x-coordinate of the vertex and substitute this into the equation to find the maximum height.

[tex]\textsf{$x$-coordinate of the vertex}: \quad x=-\dfrac{b}{2a}[/tex]

[tex]\implies \textsf{$x$-coordinate of the vertex}=-\dfrac{64}{2(-16)}=-\dfrac{64}{-32}=2[/tex]

Substitute t = 2 into the equation:

[tex]\begin{aligned}t=2 \implies h(2)&=-16(2)^2+64(2)+190\\&=-16(4)+128+190\\&=-64+128+190\\&=64+190\\&=254\end{aligned}[/tex]

Therefore, the maximum height of the object is 254 feet.

It takes 2 seconds for the object to reach its maximum height.

The true equation is 5 + n = 6.2.

Here we have to find the equation for which n = 1.2.

So the first equation is

10n = 1.2

So for this, we get the value of n as:

n = 1.2/10

  = 0.12

which is not equal to 1.2.

So it is not correct

The second equation is:

n + 1 = 1.2

n = 0.2

which is not equal to 1.2

So it is also not correct.

The third equation is:

5 + n = 6.2

n = 6.2 - 5

  = 1.2

So it is correct.

The fourth equation is:

1.2n = 10

n = 10/1.2

  = 8.33

Here n is not equal to 1.2

So it is also correct.

Therefore the correct equation is 5 + n = 6.2.

To know more about the equation refer to the link given below:

https://brainly.com/question/18831322

#SPJ9

We have a square with sides (s-4).

The perimeter of a square is 4 times the length of the side, so we can write:

If P is no more than 80 ft, we can find the maximum value for s as:

Answer:

1) The perimeter is P = 4s-16

2) The maximum value for s, if the perimeter is no more than 80 ft, is 24 ft.

N = Number of data

x1...xn = Samples

Let's calculate first:

Now:

So:

Given:

To find:

The root of 18 without using a calculator

There is a formula that gives an approximation of a square root without a calculator. This is given as:

Answer:

24

Step-by-step explanation:

8y^0 + 2y^2 * x^-1

8(4)^0 + 2(4)^2 * 2^-1

8 + 2 * 16 * 2^-1

8 + 2 * 2^-1 * 16

8 + 2^1 - 1 * 16

8 + 16

24

Hope this helps! :)

The area of the composite figure will be the sum of the area of the square and the area of the semicircle. The formula for determining the area of a square is expressed as

Area = length^2

From the diagram,

length = 12

Area of square = 12^2 = 144

The formula for determining the area of a semicircle is expressed as

Area = 1/2 * pi * radius^2

Radius = diameter/2

The diameter of the semicircle is 12. Thus,

radius = 12/2 = 6

pi = 3.14

Area of semicircle = 1/2 * 3.14 * 6^2 = 56.52

Area of composite figure = 144 + 56.52 = 200.52 in^2

The first option is the correct answer

Answer:

55.17

Step-by-step explanation:

[tex]P(0)=0.023(0)^3-0.289(0)^2+3.068(0)+55.170=55.17[/tex]

We know that AC and BD bisect each other, but AC is not equal to BD.

Basically, the problem is saying that these segments are bisectors of each other, that can be represented as the image below shows

As you can see in the image, AC and BD bisect each other, but their lengths are not equal.

The Angle-Side-Angle (ASA) criterion states that any two angles and the side included between them of one triangle are identical to the corresponding angles and the included side of the other triangle if two triangles are congruent. One of the requirements for two triangles to be congruent is angle side angle.

When two parallel lines are intersected by another line, comparable angles are the angles that are created in matching corners or corresponding corners with the transversal.

If the three sides and the three angles of both angles are equal in any orientation, two triangles are said to be congruent.

Given,

M∠1 = M∠2

(On joining BD and CD)

M∠ADB = M∠ADC

In ΔABD and ΔADC

M∠ADB = M∠ADC  (Given)

M∠BAD = M∠DAC  (Given)

AD = AD  (Common Sides)

⇒ ΔABD ≅ ΔADC  (Angle Side Angle Property)

So, BD = CD  (Corresponding sides are equal to a Congruent Triangle)

Hence, proved that BD = CD.

To know more abbout Angle SIde Angle Property, refer to this link:

https://brainly.com/question/28911587

#SPJ1

In the given right triangle of the figure

we have that

sin(O)=1/d ----> by the opposite side divided by the hypotenuse in a right triangle

solve for d

d=1/sin(O)

d=4,124,966.13 AU -----> two decimal places

the expression to calculate d for any star is equal to

You have the following expression:

x² + 6x

In order to complete the square, take into account that 6 is two times the product of the first coeffcient by the second one in the binomial (a+ b)², then, you have:

6 = 2ab

a=1 because is the coeffcient of the term with x², then for b you obtain:

b = 6/2(1) = 3

the third term of the trynomial is the squared of b.

Given:

the bearing of L from Q is 90°

Required:

what is the bearing of Q for L ​

Explanation:

There is a 180 degree difference in bearing between two location(L from Q, Q from L)

If L from Q is 90 degree then

Q from L is

180-90=90degree

Required answer:

90 degree

Solution:

Given the circle with center A as shown below:

The plane travels 120 feet counterclockwise from B to C, thus forming an arc AC.

The length of the arc AC is expressed as

Given that

we have

Hence, the length of the control line is 85.94366927 feet.

Answer:

0.1 also 0.0636942675

Explanation

Given the equation;

Using a graphing calculator, the graph of the circle becomes;

Answer:

The probability that a randomly chosen applicant has a graduate degree, given that they are female is 0.236.

Probability refers to a possibility that deals with the occurrence of random events. The probability of all the events occurring need to be 1.

P(E) = Number of favorable outcomes / total number of outcomes

Given that 249 are female and 59 are female and have a graduate degree out of 450 applicants.

We are given following in the question;

M: Applicant is male.

G: Applicant have a graduate degree

F : Applicant is female.

The Total number of applicants = 450

Number of female applicants = 249

Number of female applicants have a graduate degree = 59

Therefore,

P(G/F) = P([tex]G^F[/tex])/P(F)

= 59/207 or 0.236

Hence, the probability that a randomly chosen applicant has a graduate degree, given that they are female is 0.236.

Learn more about probability here;

https://brainly.com/question/11234923

#SPJ1

The Solution:

Given:

Required:

To find the value of V - W

Therefore, the correct answer is [option 3]